Portion of a display panel with a graphical user interface



FIG. 1 is a front view of the portion of a display panel with a graphical user interface, showing a first image in the new design;

FIG. 2 is front view thereof showing a second image;

FIG. 3 is front view thereof showing a third image;

FIG. 4 is front view thereof showing a fourth image; and,

FIG. 5 is front view thereof showing a fifth image.

The evenly spaced broken lines show portions of the graphical user interface that form no part of the claimed design. The dot-dash line showing of the portion of a display panel form no part of the claimed design. The dot-dash chain line showing of a display panel is included for the purpose of illustrating portions of the article and forms no part of the claimed design. The appearance of the transitional image sequentially transitions between the images shown in FIGS. 1-5 . The process or period in which one image transitions to another image forms no part of the claimed design. 

CLAIM The ornamental design for a portion of a display panel with a graphical user interface, as shown and described. 